package com.hz.tgb.image.qrcode.two.zxing;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.Binarizer;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.hz.tgb.image.qrcode.two.zxing.util.BufferedImageLuminanceSource;

/**
 * (二维码)
 *
 *@author hezhao on2014-11-7 下午05:27:13
 */
public class ZXingCode1 {
	public static void main(String[] args) throws WriterException {
		String content = "http://blog.csdn.net/gao36951";
		String filePath = "D:/weixin.jpg";
		try {
			File file = new File(filePath);

			ZXingCode1 zp = new ZXingCode1();

			BufferedImage bim = zp.getQR_CODEBufferedImage(content,
					BarcodeFormat.QR_CODE, 300, 300, zp.getDecodeHintType());

			ImageIO.write(bim, "jpeg", file);

			zp.addLogo_QRCode(file, new File("D:/touxiang.png"),
					new LogoConfig());

			// Thread.sleep(5000);
			// zp.parseQR_CODEImage(new File("D:/二维码生成/TDC-test.png"));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 给二维码图片添加Logo
	 * 
	 * @param qrPic
	 * @param logoPic
	 */
	public void addLogo_QRCode(File qrPic, File logoPic, LogoConfig logoConfig) {
		try {
			if (!qrPic.isFile() || !logoPic.isFile()) {
				System.out.print("file not find !");
				System.exit(0);
			}

			/**
			 * 读取二维码图片，并构建绘图对象
			 */
			BufferedImage image = ImageIO.read(qrPic);
			Graphics2D g = image.createGraphics();

			/**
			 * 读取Logo图片
			 */
			BufferedImage logo = ImageIO.read(logoPic);
			/**
			 * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
			 */
			int widthLogo = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image
					.getWidth() * 2 / 10) : logo.getWidth(null), heightLogo = logo
					.getHeight(null) > image.getHeight() * 2 / 10 ? (image
					.getHeight() * 2 / 10) : logo.getWidth(null);

			// 计算图片放置位置
			/**
			 * logo放在中心
			 */
			/*
			 * int x = (image.getWidth() - widthLogo) / 2; int y =
			 * (image.getHeight() - heightLogo) / 2;
			 */
			/**
			 * logo放在右下角
			 */
			int x = (image.getWidth() - widthLogo);
			int y = (image.getHeight() - heightLogo);
			// 开始绘制图片
			g.drawImage(logo, x, y, widthLogo, heightLogo, null);
			g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
			g.setStroke(new BasicStroke(logoConfig.getBorder()));
			g.setColor(logoConfig.getBorderColor());
			g.drawRect(x, y, widthLogo, heightLogo);

			g.dispose();
			logo.flush();
			image.flush();

			ImageIO.write(image, "png", new File("D:/TDC-"/* +new Date().getTime() */
					+ "test.png"));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 二维码的解析
	 * 
	 * @param file
	 */
	public void parseQR_CODEImage(File file) {
		try {
			MultiFormatReader formatReader = new MultiFormatReader();

			// File file = new File(filePath);
			if (!file.exists()) {
				return;
			}

			BufferedImage image = ImageIO.read(file);

			LuminanceSource source = new BufferedImageLuminanceSource(image);
			Binarizer binarizer = new HybridBinarizer(source);
			BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);

			Map hints = new HashMap();
			hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");

			Result result = formatReader.decode(binaryBitmap, hints);

			System.out.println("result = " + result.toString());
			System.out.println("resultFormat = " + result.getBarcodeFormat());
			System.out.println("resultText = " + result.getText());
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 将二维码生成为文件
	 * 
	 * @param bm
	 * @param imageFormat
	 * @param file
	 */
	public void decodeQR_CODE2ImageFile(BitMatrix bm, String imageFormat,
			File file) {
		try {
			if (null == file || file.getName().trim().isEmpty()) {
				throw new IllegalArgumentException("文件异常，或扩展名有问题！");
			}

			BufferedImage bi = fileToBufferedImage(bm);
			ImageIO.write(bi, "apng", file);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 构建初始化二维码
	 * 
	 * @param bm
	 * @return
	 */
	public BufferedImage fileToBufferedImage(BitMatrix bm) {
		BufferedImage image = null;
		try {
			int w = bm.getWidth(), h = bm.getHeight();
			image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

			for (int x = 0; x < w; x++) {
				for (int y = 0; y < h; y++) {
					image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
				}
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
		return image;
	}

	/**
	 * 生成二维码bufferedImage图片
	 * 
	 * @param content
	 *            编码内容
	 * @param barcodeFormat
	 *            编码类型
	 * @param width
	 *            图片宽度
	 * @param height
	 *            图片高度
	 * @param hints
	 *            设置参数
	 * @return
	 */
	public BufferedImage getQR_CODEBufferedImage(String content,
			BarcodeFormat barcodeFormat, int width, int height,
			Map<EncodeHintType, ?> hints) {
		MultiFormatWriter multiFormatWriter = null;
		BitMatrix bm = null;
		BufferedImage image = null;
		try {
			multiFormatWriter = new MultiFormatWriter();

			// 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
			bm = multiFormatWriter.encode(content, barcodeFormat, width,
					height, hints);

			int w = bm.getWidth();
			int h = bm.getHeight();
			image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

			// 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
			for (int x = 0; x < w; x++) {
				for (int y = 0; y < h; y++) {
					image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
				}
			}
		} catch (WriterException e) {
			e.printStackTrace();
		}
		return image;
	}

	/**
	 * 设置二维码的格式参数
	 * 
	 * @return
	 */
	public Map<EncodeHintType, Object> getDecodeHintType() {
		// 用于设置QR二维码参数
		Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
		// 设置QR二维码的纠错级别（H为最高级别）具体级别信息
		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
		// 设置编码方式
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		hints.put(EncodeHintType.MARGIN, 0);
		hints.put(EncodeHintType.MAX_SIZE, 350);
		hints.put(EncodeHintType.MIN_SIZE, 100);

		return hints;
	}
}

class LogoConfig {
	// logo默认边框颜色
	public static final Color DEFAULT_BORDERCOLOR = Color.WHITE;
	// logo默认边框宽度
	public static final int DEFAULT_BORDER = 2;
	// logo大小默认为照片的1/5
	public static final int DEFAULT_LOGOPART = 5;

	private static final int border = DEFAULT_BORDER;
	private final Color borderColor;
	private final int logoPart;

	/**
	 * Creates a default config with on color {@link #BLACK} and off color
	 * {@link #WHITE}, generating normal black-on-white barcodes.
	 */
	public LogoConfig() {
		this(DEFAULT_BORDERCOLOR, DEFAULT_LOGOPART);
	}

	public LogoConfig(Color borderColor, int logoPart) {
		this.borderColor = borderColor;
		this.logoPart = logoPart;
	}

	public Color getBorderColor() {
		return borderColor;
	}

	public int getBorder() {
		return border;
	}

	public int getLogoPart() {
		return logoPart;
	}
}